Having problems with your Hollis Explorer? LSS red light will not go out or will not let you dive as all 3 batteries are not fully charged. Common problem on the Hollis Explorer MK1. The first thing you need to do is see if it is a battery cell problem...
How to install a Oetiker hose Clamps on the Hollis Explorer and Hollis Prism Rebreathers https://youtu.be/ILIIkJx1M5I